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  <title>Check if a compression method is supported by libzip</title>
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  <h1 class="refname">ZipArchive::isCompressionMethodSupported</h1>
  <p class="verinfo">(PHP &gt;= 8.0.0, PECL zip &gt;= 1.19.0)</p><p class="refpurpose"><span class="refname">ZipArchive::isCompressionMethodSupported</span> &mdash; <span class="dc-title">Check if a compression method is supported by libzip</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-ziparchive.iscompressionmethoddupported-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="modifier">static</span> <span class="methodname"><strong>ZipArchive::isCompressionMethodSupported</strong></span>(<span class="methodparam"><span class="type">int</span> <code class="parameter">$method</code></span>, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$enc</code><span class="initializer"> = <strong><code>true</code></strong></span></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Check if a compression method is supported by libzip.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-ziparchive.iscompressionmethoddupported-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">method</code></dt>

     <dd>

      <p class="para">
       The compression method, one of the
       <strong><code>ZipArchive::CM_*</code></strong> constants.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">enc</code></dt>

     <dd>

      <p class="para">
       If <strong><code>true</code></strong> check for compression, else check for decompression.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-ziparchive.iscompressionmethoddupported-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-ziparchive.iscompressionmethoddupported-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    This function is only available if built against libzip ≥ 1.7.0.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-ziparchive.iscompressionmethoddupported-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="ziparchive.setcompressionindex.html" class="methodname" rel="rdfs-seeAlso">ZipArchive::setCompressionIndex()</a> - Set the compression method of an entry defined by its index</span></li>
    <li class="member"><span class="methodname"><a href="ziparchive.setcompressionname.html" class="methodname" rel="rdfs-seeAlso">ZipArchive::setCompressionName()</a> - Set the compression method of an entry defined by its name</span></li>
   </ul>
  </p>
 </div>


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